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arXiv 2402.05486hep-thgr-qc
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具有渐近平直度规的引力扭结

Gravitating kinks with asymptotically flat metrics

Ziqi Wang, Yuan Zhong, Hui Wang

AI总结:

本文研究含 $α\mathcal{X}^2$ 导数耦合的二维伸缩子引力模型,利用一阶形式体系构造精确静态扭结解,实现渐近平直度规,并证明其线性稳定及标量场可通过相互作用局域化。

摘要:

在这项工作中,我们考虑一个二维(2D)伸缩子引力模型,其中伸缩子动能项 $\mathcal{X}$ 被一个额外的导数耦合项 $α\mathcal{X}^2$ 修改。在具有正则标量物质场的情况下,该模型的场方程具有简单的一阶形式体系,由此可以构造精确的静态扭结解。这些解的新颖之处在于,相应的度规可以是渐近平直的,而不是渐近反德西特的。我们还研究了线性稳定性和标量物质场的局域化。结果发现,这些解对小的线性扰动是稳定的,并且标量物质场的局域化可以通过引入标量-扭结相互作用来实现。

英文摘要:

In this work, we consider a two-dimensional (2D) dilaton gravity model where the dilaton kinetic term $\mathcal{X}$ is modified by an additional derivative coupling term $α\mathcal{X}^2$. In the case with a canonical scalar matter field, the field equations of this model have a simple first-order formalism, from which exact static kink solutions can be constructed. The novelty of these solutions is that the corresponding metric can be asymptotically flat rather than asymptotically anti de Sitter. The linear stability and the localization of scalar matter fields are also studied. It was found that the solutions are stable against small linear perturbations, and the localization of scalar matter fields can be realized by introducing scalar-kink interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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